Gearing.



PATENTED APR. 23, 1907. M. H. BALLARD.

GEA RING.

APPLICATION FILED DEG.26,1905.

2 SHEETS-SHEET 1.

Mi messes;

PATBNTED APR. 23, 1907 M. H. BALLARD.

GEARING.

APPLICATION FILED DEG.26, 1905.

2 SHEETSSHEET 2.

11/5222 ess es 1 172M872 $0? .unirox 11. Batman, or rrxx, nAssAenesnrrs,AssicNoR TO TRIPP FRUI T WRAPPING MACHIN ['1 A COItPORAIION OF MAINE.

(();, OF SAN FRANCISCO, CALIFORNIA,

. GEARING.

Specification of Letters Patent.

Patented April 23, 1907.

Application tiled December 26,1905. Serial No. 293,221.

Be it known lhat l. Mnxroxll. Banner), of Lynn, county oi Essex, Stateoi Massachusetts, have invented an Improvement in Gearing, ol which thefollowing description, in connection with the accompanying drawings, isa specification, like characters on the drawings representing likeparts.

This invention relates to' gearing especially adapted to be employed foroperating the paper 'l'eeding device oi a wrapping machine.

In certain forms oi wrapping machines, as "for instance, in the wrappingmachine shown in Letters Patent No. 516,136 dated March 6,

1894, the paper, in strip form, is taken from. a reel and fed forward bymeans oi suitable intermittinglv operated feeding rolls. In said patentthe means l'or operating the -feeding rolls to intermittingly feedforward the paper, is connected with one of said rolls by a pawl andratchet.

In practice the machine is run at a very high speed and as a result thepawl and ratchet connection soon wears out and this invention has forits object to provide improved means ol" greater durability forintermittingly operating the paper feeding rolls.

The invention consists essentially of means for intermittingly operatingthe feed rolls comprising essentially a pair of spiral gears inengagement with each other and revolvablc on parallel axes, one of whichis movable longitinlinall on its support and the other is restrainedfrom longitudinal movement, means for revolving said restrained gear,first. in one and then in the other directionto thereby revolve theother gear and also to move it longitudinally on its support, movableclutch member connected with said. longitudinally movable gear and afixed. clutch member connected. with one of the feed rolls into and outof engagement with which the aforesaid clutch member is movable.

Figure 1 shows-in side en-vation a paper feeding device for wrappingmachines emembodying this invention. Fig. 2 is a front elevation of thefeeding rolls and actuating device therefor. Fig. '3 is a side view ofthe feeding rolls and actuating device therefor. Fig. 4 is an enlargedlongitudinal section of the driven spiral gear of the'pair of spiralgears which constitute the essential elements of the actuating device.Fig. 5 is a side view of the driven spiral gear. Fig. 6 is a front viewof the actuating device shown in Fig. 2, the clutch members being inengagement.

41 and -12 represent the two paper feeding rolls, which are j ournaledin suitable bearings and arranged one above the other to receive thestrip of paper between them and feed it along the rolls are rotated.Spur gears 51, 52 are secured respectively to the rolls 41, 42, whichengage each other, said gears enabling one oi the rolls to be drivenpositively by the other roll. As herein shown the lower roll 42 isdesigned. to serve as the driving roll, the upper roll 41 being drivenby it. The driving roll 42 is designed to be rotated intermittingly, sothat the strip of paper will be fed forward intermittingly, and its endportion repeatedly presented to a paper-cutting device, not shown, whichsevers the strip to from wrappers. One member of a clutch is secured tothe journal of the driving roll 42, which is herein shown as a disk 60,having ratchet teeth formed on its outer side or face, said diskconstituting the fixed clutch member. The movable clutch member consistsof a like dish 61 mounted to slide on said journal into and out ofengagement with the fixed clutch member 60, said disk 61 having ratchetteeth formed on its side or face adjacent the fixed clutchmember. Whenthe movable clutch member is slid along'on the journal into engagemen twith the iixed clutch member, the

two ratchet toothed faces of said members are brought into engagement.The mov able clutch member 61 is also rotatably mounted on said journal,so that when slid along their-on and brought into engagement with thefixed clutch-member 60, it may be rotated to rotate the driving roll 42.The

movable clutch member is secured to. one

side or face of a spiral gear 64, or is connected to said. spiral gearin such manner as to be operated by it. The spiral gear 64 is mounted onsaid journal, and is adapted to rotate thereon and also to move thereonlongitudinally. The spiral gear 64 is engaged and driven by a spiralgear 65 which is mounted on a fixed stud or other bearing which may beprovided for it and which is made wider than the spiral gear 64. Apinion 53 is also inountedon said stud which is secured to the spiralgear 65. The fined stud on which the spiral gear 65 and pinion aremounted 1s d1s posed in parallelism with the journal supportmg the siral gear 64 and the clutchmembers, so that t e two spiral gears 65 and64 revolve on parallel axes; The spiral gear 65 is restrained fromsidewise'or longitudinal movement on the fixed stud so that whenrevolved thereon it will operate to revolve the spiral earv 64 and alsoto move said gear sidewise or ongitudinally-on its support, or in adirection toward and from the fixed clutch member. A rack bar 54 engagessaid pinion 53 which is looselyconnected at one end by a link to anupright arm 55, which is pivoted at its lower end to the frame, andwhich has extended from it, at or near its lower end, a curved slottedarm, or it may he an arm provided with a curved slot, to which isadjustably connected one end of a bar 57, which is connected by aneccentric to the-main shaft f As the main shaftf is rotated the rack bar54 will be reciprocated longitudinally and the pinion which it engageswill be revolved first in .one and then'in the other direction and thespiral gear 65 to which it is connected will be likewise revolved andthe spiral gear 64 will be revolved and also moved a ong on the journalsupporting it to thereby move the movable clutch-member into and outofengagement with the fixed clutch member and to revolve it, suchsidewise or dongitudinal movement on the spiral gear 64 Y is revolvedintermittingly and in the same.

' being due to the inclined formation of the teeth of the spiral gears.While the movable clutch member is in engagement with the fixed clutchmember and 1s revolving, the roll 42 will be correspondingly revolvedand while said movable clutch member is out of engagement with saidfixed clutch member the roll 42 will remain at rest. Thus the rolldirection. The rack bar 54 operates to turn the s iral ear 65 a numberof revolutions to there y r0 ate the driving roll 42 a number ofrevolutions to feed forward a considerable length 'of paper and by adusting the con nection of thebar 57 with the curved slotted extension onthe upright arm the number of revolutions given. to the spiral gear 65may be regulated and the length of paper which is fed forward therebydeternni'iod.

Byemploylng spiral gears, as contrasted with spurgears, or of otherforms, the driven. gear. 64 is given these two movements, 5 'andresultsin the PI OIlLlCl lOH of an actuating device for intermittingly rotatingthe roll 42,

which is Very simple and has great durability. 3 Ga 513191011661 side ofthe spiral gear 64 a spring 66 .is preferably provided, which will becontained in a circular groove formed therein,.onc end of which bearsagainst said spiral gear 64 and the other end of which bears against afixed stop, the action of said spring being to move the spiral gear 64!in a direction to cause the movable clutch memher to engage the fixedclutch member, and while I prefer to employ the spring for this purposewhich results in more speedily moving the movable clutch member intoengagement with the fixed member, I find in practice that it may beomitted, as the driven spiral gear will be moved loiigitudinally as wellas rotarily by the driving spiral gear, and produce an elllciontactuating device.

Having thus described my invention, what I claim as new-and desire tosecure by Letters Patent is: I

1. The combination with a member adapted to be rotated intermittinglyand provided with a clutcl'i-mcmber, of a pair of spiral gears inengagement with each other and rcvoluble on parallel axes, one of whichis movable longitudinally on its support and provided with aclutch-member, and the other is restrained from longitudinal movement,meansfor revolving said restrained gearllrst in one and then in theother direction to thereby revolve the other gear and also move itlongitudinally on its support and move the clutch member which isconnected with it and the clutch-member on the memher to be rotated intoand out of engagement, substantially as described. 7

2. The combination with a member adapted to be rotated intermittinglyand provided with a clutch-member, of a pair of spiral gears inengagement with each other and rev oluhlc on parallel axes, one of whichis movable longitudinally on its support and providod with aclutch-member, and the other is restrained from longitudinal movement, apinion connected with the restrained gear, a lmigitudinallyreciprocating bar engaging it for revolving said restrained gear firstin one and then in the other direction, to thcreby revolve the gearwhich it engages and also move said gear longitudinally on its supportand move the clutch-membcr connected with it and the clutch-member onthe mem- 'i'\lILTON ll. BALLARD.) Witnesses:

B. J. .\"orns, ll. ll. Davis.

her to be rotatrd into and out of engagement,

